*::after, *::before {
  box-sizing: border-box;
}

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,body{
  overflow: hidden;
}

section{
  display: flex;
  flex-flow: column wrap;
  justify-content: center;
  align-items: center;
  background: linear-gradient(to bottom, #f1f4f9, #FFFFFF);
  min-height: 100vh;
}

section .color{
  position: absolute;
  filter: blur(150px);
}

section .color:nth-child(1) {
  top: 0;
  left: 100px;
  background: #ff359b;
  height: 600px;
  width: 100%;
}

section .color:nth-child(2) {
  bottom: 0;
  right: 0;
  background: #fffd87;
  height: 500px;
  width: 800px;
}

section .color:nth-child(3) {
  bottom: 50px;
  left: 0;
  background: #00d2ff;
  height: 500px;
  width: 500px;
}

.form_box{
  position: relative;
  width: 100%;
}

.form_box .square {
  position: absolute;
  border-radius: 10px;
  background-color: rgba(255,255,255,.1);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255,255,255,.5);
  border-bottom: 1px solid rgba(255,255,255,.2);
  border-right: 1px solid rgba(255,255,255,.2);
  animation: animate 10s linear infinite;
  animation-delay: calc(-1s * var(--i));
}

@keyframes animate {
  0%, 100%{
    transform: translateY(-40px);
  }
  50% {
    transform: translateY(40px);
  }
}

.form_box .square:nth-child(1) {
  width:100px;
  height: 100px;
  top: -50px;
  right: -50px;
}

.form_box .square:nth-child(2) {
  width:120px;
  height: 120px;
  top: 150px;
  left: -100px;
  z-index: 2;
}

.form_box .square:nth-child(3) {
  width:80px;
  height: 80px;
  bottom: 50px;
  right: -60px;
  z-index: 2;
}

.form_box .square:nth-child(4) {
  width: 50px;
  height: 50px;
  bottom: -80px;
  left: 100px;
}

.form_box .square:nth-child(5) {
  width: 60px;
  height: 60px;
  top: -120px;
  left: 140px;
}

.form_box .container {
  position: relative;
  width: 400px;
  height: 400px;
  background-color: rgba(255,255,255,.1);
  border-radius: 10px;
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255,255,255,.5);
  border-bottom: 1px solid rgba(255,255,255,.2);
  border-right: 1px solid rgba(255,255,255,.2);
}

.form {
  width: 100%;
  height: 100%;
  padding: 40px;
}

.form h2 {
  font-size: 24px;
  position: relative;
  letter-spacing: 1px;
  margin-bottom: 40px;
  color: #FFF;
  font-weight: 600;
}

.form h2::after {
  content: '';
  display: block;
  position: absolute;
  bottom: -15px;
  width: 50px;
  height: 4px;
  background: #FFF;
}

.form .form_item{
  width: 100%;
  margin-top: 20px;
}

.form .form_item input {
  width: 100%;
  outline: none;
  padding: 10px 20px;
  background: rgba(255,255,255,.2);
  color: #FFF;
  font-size: 15px;
  border-radius: 35px;
  box-sizing: border-box;
  border: 1px solid rgba(255,255,255,.5);
  border-bottom: 1px solid rgba(255,255,255,.2);
  border-right: 1px solid rgba(255,255,255,.2);
  box-shadow: 0 5px 15px rgba(0,0,0, .05);
}

.form .form_item input::placeholder {
  color: #FFF;
}

.form .form_item input[type="submit"] {
  margin-bottom: 20px;
  max-width: 120px;
  background: #ffffffc2;
  color: #666;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 5px;
}

.forget{
  color: #FFF;
  margin-top: 8px;
}

.forget a{
  color: #FFF;
  font-weight: 600;
  text-decoration: none;
  padding-left: 10px;
}
